US3324624A - Wrapping machine - Google Patents

Wrapping machine Download PDF

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Publication number
US3324624A
US3324624A US333072A US33307263A US3324624A US 3324624 A US3324624 A US 3324624A US 333072 A US333072 A US 333072A US 33307263 A US33307263 A US 33307263A US 3324624 A US3324624 A US 3324624A
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US
United States
Prior art keywords
reversing
conveyor chain
base frame
driver
drivers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US333072A
Other languages
English (en)
Inventor
Mayer Rudolf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CARL DROHMANN GmbH
Original Assignee
CARL DROHMANN GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CARL DROHMANN GmbH filed Critical CARL DROHMANN GmbH
Application granted granted Critical
Publication of US3324624A publication Critical patent/US3324624A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/06—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths
    • B65B11/08—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path
    • B65B11/16—Wrapping articles, or quantities of material, by conveying wrapper and contents in common defined paths in a single straight path to fold the wrappers in channel form about contents and then to close the ends of the channel by folding and finally the mouth of the channel by folding or twisting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B35/00—Supplying, feeding, arranging or orientating articles to be packaged
    • B65B35/10—Feeding, e.g. conveying, single articles
    • B65B35/20—Feeding, e.g. conveying, single articles by reciprocating or oscillatory pushers
    • B65B35/205—Feeding, e.g. conveying, single articles by reciprocating or oscillatory pushers linked to endless conveyors

Definitions

  • This invention is concerned with a wrapping machine in which articles to be wrapped are each fed with a wrapper through a folding tube, so that the wrapper is folded into U-shape around the article, by one of a number of drivers associated with an endless conveyor chain which runs around reversing wheels.
  • the present invention provides a machine in which articles to be wrapped are each fed with a wrapper through a folding tube, so that the wrapper is folded into U-shape around the article, by one of a number of drivers associated with an endless conveyor chain which runs around reversing wheels each forming a reversing section of the conveyor, and the drivers are each pivotally coupled to the conveyor chain by at least one rod and are guided in stationary rails for movement therealong, the arrangement being such that, when the pivot on the conveyor chain of the rod of each driver passes around a reversin section of the conveyor chain, the driver concerned is reversed.
  • the rails for guiding the drivers during their feeding movement are of hysteresis loop form.
  • each driver is moved out of the path of feed after leaving the rear side of the article being fed thereby, and is brought back to its original position in readiness for a fresh feeding movement along a path other than the path of feed.
  • the rails may have switches at the ends of the said hysteresis loop, each switch being constituted by a tongue which controls the reversal of the drivers.
  • an output which is at least doubled is attained by the machine of the present invention whilst operating at the same speed of conveyance.
  • FIGURE 1 is a longitudinal section through the wrapping machine.
  • FIGURE 2 is a plan view, partly cut away, of the wrapping machine shown in FIGURE 1, and
  • FIGURE 3 is a side view, on an enlarged scale, on one of the drivers showing it in a further position from FIGURE 1.
  • the wrapping machine illustrated in the drawings is particularly suitable for wrapping large articles G or groups of identical smaller articles or packages in wrappers E.
  • the method of wrapping chosen for the present example is that known as pocket folding in which a wrapper is first folded in U-shape around the front, upper and lower sides of each article, whereupon the two projecting parts of the wrapper at the ends of the article are folded in and then the rear side of the article is enclosed by the wrapper.
  • a wrapper E in U-shape around an article G In order to fold a wrapper E in U-shape around an article G, the latter is brought in the known way up against the wrapper E, which is fed in in a vertical plane. The article and the wrapper are then pushed through a folding tube 1 which is provided at both its sides with folding members 2, 3 and 4 for folding in the wrapper at the ends of the packagePushing of the articles G is performed successively by four drivers 5 which are connected to a pair of endless conveyor chains 8 which circulate continuously around two pairs of reversing wheels 6, 7 in the direction of the arrows shown in FIGURES 1 and 3.
  • One pair of reversing wheels, 6 or '7 is driven by any suitable means, e.g. an electric motor.
  • Each of the drivers 5 comprises a pushing plate 10, a frame 11 and a carriage 12 and the drivers, are guided in two sets of rails 14 of U-shape in cross section by means of rollers 13 which are mounted on the carriages i2 and run in the rails. Pivoted to the carriage 12 of each driver 5 are the ends of two rods 15 which are pivotally connected at their other ends to the conveyor chains 3.
  • the two sets of rails 14 are arranged below the table 16 of the machine on which the articles G are fed, and the path of these rails is of hysteresis loop form with two tracks, viz. an upper and a lower track, and two switches constituted by two pairs of pivotable tongues 17 and 18.
  • the drivers 5 are drawn along the upper track of the rails and pushed along the lower, return track by the conveyor chains 8.
  • the rails are so associated with the conveyor chains 8 that each driver 5 has imparted to it a reversing movement at the end of the upper track, i.e.
  • the switches 17 and 18 are of such a form that, after a O initiation of the reversing movement of each driver 5, its carriage 12 is automatically brought on to the next rail track.
  • the two pivotable tongues of each switch operate in a similar way to a switch in a railroad system.
  • a counter weight 23 which biases the tongue to a normal rest position in the upper track of the U-section rail 14.
  • the tongues then return to their normal positions and, when the driver concerned is moved out of the switch, cause it to move on to the lower track.
  • the pivotable tongues of the switch 18 are controlled in the same manner but under their own weight.
  • a pivotable plate 20 is mounted in the machine table 16 for the purpose of guiding each pushing plate 10 through the machine table 16 at the end of the feed movement of the driver concerned.
  • This plate 20 is periodically swung downwardly so that a free space is formed for the passage therethrough of a pushing plate 10 (as shown in FIGURE 3).
  • the pushing plate 10 of each driver is pivoted into a horizontal position on the return movement of the driver.
  • each set of rails 14 is provided with pivotable parts 28 and 29 to allow for passage of the pins 27 therethrough.
  • the parts of the wrapper at the rear side of the package are .then folded down by means of folding members 25, 26 (FIGURE 1) at the working station to which the articles G come at the end of their feed by the drivers 5.
  • the further conveyance of the finished packages to the outlet of .the machine is still performed by the drivers 5 as the fresh articles G fed to the said working station advance the preceding articles.
  • a wrapping machine comprising a base frame; a folding tube mounted on the base frame; an endless conveyor chain which runs around reversing wheels carried by the base frame, each reversing wheel forming a reversing section of the conveyor chain; means for circulating .the conveyor chain around the reversing wheels; guide rails fixed to the base frame alongside the conveyor chain and defining a path constituted by an upper track and a lower track with intersecting portions; a number of drivers guided on said guide rails for movement therealong, at least one rod pivotally coupling each driver to the conveyor chain, each driver being arranged to move through the folding tube to push an article to be wrapped and a wrapper through the tube so that the wrapper is folded into U-shape around the article; and means associated with the guide rails adjacent the reversing sections of the conveyor chain for switching the drivers from one track to the other and reversing their direction of travel as the pivots on the conveyor chain of the said rods pass around the reversing sections.
  • a wrapping machine comprising a base frame; a folding tube mounted on the base frame; an endless conveyor chain which runs around reversing wheels carried by the base frame, each reversing wheel forming a reversing section of the conveyor chain; means for circulating the conveyor chain around the reversing wheels; guide rails which are fixed to the base frame alongside the conveyor chain and are of hysteresis loop form defining an upper and lower track with intersecting portions adjacent the said reversing sections; a number of drivers guided on said guide rails for movement therealong, at least one rod pivotally coupling each driver to the conveyor chain, each driver being arranged to move through the folding tube to push an article to be wrapped and a wrapper through the .tube so that the wrapper is folded into U-shape around the article; and means associated with the intersecting portions of the hysteresis loop for switching the drivers from one track to the other and reversing the direction of travel of the drivers as the pivots on the conveyor chain of the said rods pass around the
  • a wrapping machine comprising a base frame; a folding tube mounted on the base frame; and endless conveyor chain which runs around reversing wheels carried by the base frame and has a straight section extending alongside the folding tube, each reversing wheel forming a reversing section of the conveyor chain; means for circulating the conveyor chain around the reversing wheels; a number of drivers, at least one rod pivotally coupling each driver to the conveyor chain such that each driver is arranged to move, along the said straight section of the conveyor chain, through the folding tube to feed an article to be wrapped and a wrapper through the tube so that the wrapper is folded into U-shape around the article; guide rails of hysteresis loop form fixed to the base frame alongside the conveyor chain and defining an upper and lower track with intersecting portions and with the ends of the hysteresis loop and adjacent the said reversing sections, the aforesaid drivers being guided on the guide rails for movement therealong when feeding articles through the folding tube and when being returned to a position
  • a wrapping machine comprising a base frame; a horizontal table which is mounted on the base frame and on which articles to be wrapped are fed into the machine; a folding tube mounted in a horizontal disposition on the base frame above the said table; an endless conveyor chain which runs around two reversing wheels carried by the base frame and has a horizontal straight section disposed below and adjacent to the aforesaid table, each reversing wheel forming a reversing section of the conveyor chain; means for circulating the conveyor chain around the reversing wheels; guide rails fixed to the base frame alongside the conveyor chain and a horizontal upper track and a lower track with intersecting portions adjacent the reversing sections; a number of drivers guided on said guide rails for movement therealong, at least one rod pivotally coupling each driver to the conveyor chain, each driver being arranged to move, along the said straight section of the conveyor chain, through the folding tube to push an article to be wrapped and a wrapper through the tube so that the wrapper is folded into U-shape around the article; and means associated with the
  • a wrapping machine comprising a base frame; a folding tube mounted on the base frame; an endless conveyor chain which runs around reversing wheels carried by the base frame, each reversing wheel forming a reversing section of the conveyorv chain; means for circulating the conveyor chain around the reversing wheels, guide rails fixed to the base frame alongside the conveyor chain; a number of drivers guided on said guide rails for movement therealong at least one rod pivotally coupling each driver to the conveyor chain, each driver being arranged to move through the folding tube to push an article to be wrapped and a wrapper through the tube so that the wrapper is folded into U-shape around the article, each driver including a pivotable pushing plate arranged to engage an article to be wrapped as the driver is moved through the folding tube, and a permanent magnet, Which is mounted on the driver, for freely holding the pushing plate in a predetermined position during feed of an article through the folding tube; and means associated with the guide rails adjacent the reversing sec tions of the conveyor chain for reversing the drivers as the
  • a wrapping machine comprising a base frame; a horizontal table which is mounted on the base frame and on which articles to be wrapped are fed into the machine; a folding tube mounted in a horizontal disposition on the base frame above the said table; an endless conveyor chain which runs around two reversing wheels carried by the base frame and has a horizontal straight section disposed below and adjacent to the aforesaid table, each re- 6 versing Wheel forming a reversing section of the conveyor chain; means for circulating the conveyor chain around the reversing wheels; guide rails which are fixed to the base frame alongside the conveyor chain and are of hysteresis loop form with the ends of the hysteresis loop adjacent the said reversing sections; a number of drivers guided on said guide rails for movement therealong, at least one rod pivotally coupling each driver to the conveyor chain, each driver being arranged to move through the folding tube to push an article to be wrapped and a wrapper through the tube so that the wrapper is folded into U-shape around the article, each

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
US333072A 1963-02-05 1963-12-24 Wrapping machine Expired - Lifetime US3324624A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0040826 1963-02-05

Publications (1)

Publication Number Publication Date
US3324624A true US3324624A (en) 1967-06-13

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ID=7045694

Family Applications (1)

Application Number Title Priority Date Filing Date
US333072A Expired - Lifetime US3324624A (en) 1963-02-05 1963-12-24 Wrapping machine

Country Status (3)

Country Link
US (1) US3324624A (de)
CH (1) CH411677A (de)
GB (1) GB1021065A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156333A (en) * 1974-08-28 1979-05-29 Robert Bosch Gmbh Packaging machine
US5133173A (en) * 1990-04-02 1992-07-28 G.D. Societa Per Azioni Method and equipment for wrapping groups of packets
US6085494A (en) * 1997-10-18 2000-07-11 Topack Verpackungstechnik Gmbh Method of and apparatus for wrapping articles of the tobacco processing industry into blanks of packing material
US6658819B2 (en) * 2000-12-20 2003-12-09 Techmatic S.R.L. Method and an apparatus for packaging stacks of multiply articles made of paper or the like

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2817933A (en) * 1954-10-27 1957-12-31 American Mach & Foundry Wrapping machine article conveying mechanism
US2980038A (en) * 1957-12-27 1961-04-18 Capitol Prod Corp Level loader and unloader for baking oven
US2999345A (en) * 1959-03-17 1961-09-12 Molins Machine Co Ltd Apparatus for folding flexible wrappers about rectangular block-shaped articles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2817933A (en) * 1954-10-27 1957-12-31 American Mach & Foundry Wrapping machine article conveying mechanism
US2980038A (en) * 1957-12-27 1961-04-18 Capitol Prod Corp Level loader and unloader for baking oven
US2999345A (en) * 1959-03-17 1961-09-12 Molins Machine Co Ltd Apparatus for folding flexible wrappers about rectangular block-shaped articles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156333A (en) * 1974-08-28 1979-05-29 Robert Bosch Gmbh Packaging machine
US5133173A (en) * 1990-04-02 1992-07-28 G.D. Societa Per Azioni Method and equipment for wrapping groups of packets
US6085494A (en) * 1997-10-18 2000-07-11 Topack Verpackungstechnik Gmbh Method of and apparatus for wrapping articles of the tobacco processing industry into blanks of packing material
US6658819B2 (en) * 2000-12-20 2003-12-09 Techmatic S.R.L. Method and an apparatus for packaging stacks of multiply articles made of paper or the like

Also Published As

Publication number Publication date
GB1021065A (en) 1966-02-23
CH411677A (de) 1966-04-15

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